4CR420A KOYO Four-row cylindrical roller bearings
| Brand Name: |
KOYO |
| Model Number: |
4CR420A |
| Cone Part Number: |
K38880 |
| Design Units: |
Imperial |
| Cage Type: |
Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1: |
86700 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: |
22500 lbf |
| d: |
10.3750 in |
| B - Cone Width: |
1.1250 in |
| R - Cone Backface To Clear Radius3: |
0.06 in |
| PDF |
4CR420A |
Product Details
| Cone Part Number |
K38880 |
| Design Units |
Imperial |
| Cage Type |
Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 |
86700 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 |
22500 lbf |
| d |
10.3750 in |
| B - Cone Width |
1.1250 in |
| R - Cone Backface To Clear Radius3 |
0.06 in |
| da - Cone Frontface Backing Diameter |
10.83 in |
| db - Cone Backface Backing Diameter |
10.83 in |
| Ab - Cage-Cone Frontface Clearance |
0.1 in |
| Aa - Cage-Cone Backface Clearance |
0.01 in |
| a - Effective Center Location4 |
0.8 in |
| C90 - Dynamic Radial Rating (90 million revolutions)5 |
12900 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)6 |
49800 lbf |
| C0 - Static Radial Rating |
125000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)7 |
8080 lbf |
| K - Factor8 |
1.6 |
| G1 - Heat Generation Factor (Roller-Raceway) |
1028.2 |
| G2 - Heat Generation Factor (Rib-Roller End) |
496.4 |
| Cg - Geometry Factor |
0.168 |